NEW YORK, NY - DECEMBER 10: Carrie Underwood and DICK'S Sporting Goods launch CALIA by Carrie Underwood, a fitness and lifestyle apparel brand at an event on December 10, 2014 hosted by Alicia Quarles in New York City. (Photo by Ilya S. Savenok/Getty Images for CALIA by Carrie Underwood)

NEW YORK, NY - DECEMBER 10: Carrie Underwood and DICK'S Sporting Goods launch CALIA by Carrie Underwood, a fitness and lifestyle apparel brand at an event on December 10, 2014 hosted by Alicia Quarles in New York City. (Photo by Ilya S. Savenok/Getty Images for CALIA by Carrie Underwood)

Brad Paisley may have announced it to the world, but Carrie Underwood found out her baby's gender in a much more private setting….and it wasn't a doctors office.

NEW YORK, NY - APRIL 29: Honoree Carrie Underwood (L) and husband Mike Fisher attend the TIME 100 Gala, TIME's 100 most influential people in the world, at Jazz at Lincoln Center on April 29, 2014 in New York City. (Photo by Ben Gabbe/Getty Images for TIME)

NEW YORK, NY - JUNE 10: Singer Carrie Underwood attends the Samsung Hope For Children Gala 2014 on June 10, 2014 in New York City. (Photo by Neilson Barnard/Getty Images for Samsung)

NEW YORK, NY - JUNE 10: Singer Carrie Underwood attends the Samsung Hope For Children Gala 2014 on June 10, 2014 in New York City. (Photo by Neilson Barnard/Getty Images for Samsung)

NASHVILLE, TN - JUNE 04: Carrie Underwood and Miranda Lambert perform during the 2014 CMT Music awards at the Bridgestone Arena on June 4, 2014 in Nashville, Tennessee. (Photo by Jeff Kravitz/FilmMagic)

NASHVILLE, TN - JUNE 04: Carrie Underwood (L) and Miranda Lambert attend the 2014 CMT Music awards at the Bridgestone Arena on June 4, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/WireImage)

NASHVILLE, TN - JUNE 04: Carrie Underwood and Miranda Lambert attend the 2014 CMT Music awards at the Bridgestone Arena on June 4, 2014 in Nashville, Tennessee. (Photo by Terry Wyatt/FilmMagic)

LAS VEGAS, NV - MAY 18: Singer Carrie Underwood arrives at the 2014 Billboard Music Awards at the MGM Grand Garden Arena on May 18, 2014 in Las Vegas, Nevada. (Photo by Axelle/Bauer-Griffin/FilmMagic)

LAS VEGAS, NV - MAY 18: Singer Carrie Underwood arrives at the 2014 Billboard Music Awards at the MGM Grand Garden Arena on May 18, 2014 in Las Vegas, Nevada. (Photo by Axelle/Bauer-Griffin/FilmMagic)

LAS VEGAS, CA- MAY 18: Singer Carrie Underwood, winner of the Milestone Award, poses in the press room at the 2014 Billboard Music Awards at the MGM Grand Garden Arena on May 18, 2014 in Las Vegas, Nevada.(Photo by Jeffrey Mayer/WireImage)

Carrie Underwood accepts the award for video of the year for "See You Again" at the CMT Music Awards at Bridgestone Arena on Wednesday, June 4, 2014, in Nashville, Tenn. (Photo by Wade Payne/Invision/AP)

Carrie Underwood performs at the iHeartRadio Country Festival on Saturday, March 29, 2014 in Austin, Texas. (Photo by Jack Plunkett/Invision/AP)

Carrie Underwood performs on NBC's "Today" show on Wednesday, Aug. 15, 2012 in New York. (Photo by Charles Sykes/Invision/AP)

Al Pacino, left, and Carrie Underwood seen at the 65th Primetime Emmy Awards at Nokia Theatre on Sunday Sept. 22, 2013, in Los Angeles. (Photo by Todd Williamson/Invision for Academy of Television Arts & Sciences/AP Images)

Carrie Underwood, Mark Burnett and Roma Downey greet each other as they arrive at the 65th Primetime Emmy Awards at Nokia Theatre on Sunday Sept. 22, 2013, in Los Angeles. (Photo by Matt Sayles/Invision for Academy of Television Arts & Sciences/AP Images)

FILE - This June 9, 2013 file photo shows Carrie Underwood performing at the 2013 CMA Music Festival in Nashville, Tenn. On Sept. 8, Underwood will sing "Waiting All Day for Sunday Night," the new theme song for "Sunday Night Football." (Photo by Wade Payne/Invision/AP, File)

Carrie Underwood performs at LP Field on Sunday June 9, 2013 in Nashville Tennessee.(Photo by John Davisson/Invision/AP)

From left, Leslie Fram, senior vice president of music strategy, CMT, Carrie Underwood and Van Toffler, president, Viacom Media Networks Music and Logo Group arrive at the 2013 CMT Music Awards at Bridgestone Arena on Wednesday, June 5, 2013, in Nashville, Tenn. (Photo by Frank Micelotta/Invision/AP)

Carrie Underwood performs at the 2013 CMT Music Awards at Bridgestone Arena on Wednesday, June 5, 2013, in Nashville, Tenn. (Photo by Donn Jones/Invision/AP)

Carrie Underwood performs with Brad Paisley on day 4 at the 2013 CMA Music Festival at LP field on Sunday, June 9, 2013 in Nashville, Tenn. (Photo by Wade Payne/Invision/AP)

Carrie Underwood performs "Two Black Cadillacs" at the 48th Annual Academy of Country Music Awards at the MGM Grand Garden Arena in Las Vegas on Sunday, April 7, 2013. (Photo by Chris Pizzello/Invision/AP)

Singers Shania Twain , left, Carrie Underwood and Faith Hill, right, arrive at the 48th Annual Academy of Country Music Awards at the MGM Grand Garden Arena in Las Vegas on Sunday, April 7, 2013. (Photo by Al Powers/Invision/AP)

Carrie Underwood poses backstage with the award for best country solo performance for "Blown Away" at the 55th annual Grammy Awards on Sunday, Feb. 10, 2013, in Los Angeles. (Photo by Matt Sayles/Invision/AP)

Singer Carrie Underwood poses in the press room with her awards for Female Artist of the Year and Single by a Vocal Collaboration backstage at the American Country Awards on Monday, Dec. 10, 2012, in Las Vegas. (Photo by Jeff Bottari/Invision/AP)

Carrie Underwood arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Carrie Underwood performs onstage at the 46th Annual Country Music Awards at the Bridgestone Arena on Thursday, Nov. 1, 2012, in Nashville, Tenn. (Photo by Wade Payne/Invision/AP)

Carrie Underwood, left, and Mike Fisher arrive at the 46th Annual Country Music Awards at the Bridgestone Arena on Thursday, Nov. 1, 2012, in Nashville, Tenn. (Photo by Chris Pizzello/Invision/AP)

Carrie Underwood arrives at the 46th Annual Country Music Awards at the Bridgestone Arena on Thursday, Nov. 1, 2012, in Nashville, Tenn. (Photo by Chris Pizzello/Invision/AP)

Carrie Underwood performs on NBC's "Today" show on Wednesday, Aug. 15, 2012 in New York. (Photo by Charles Sykes/Invision/AP)

Carrie Underwood performs on NBC's "Today" show on Wednesday, Aug. 15, 2012 in New York. (Photo by Charles Sykes/Invision/AP)

Carrie Underwood performs at the 2012 CMT Music Awards on Wednesday, June 6, 2012 in Nashville, Tenn. (Photo by John Shearer/Invision/AP)

Carrie Underwood performs at the 2012 CMT Music Awards on Wednesday, June 6, 2012 in Nashville, Tenn. (Photo by John Shearer/Invision/AP)

Carrie Underwood, left, and Mike Fisher arrive at the American Idol Finale on Wednesday, May 23, 2012 in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Carrie Underwood arrives at the American Idol Finale on Wednesday, May 23, 2012 in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Carrie Underwood arrives at the American Idol Finale on Wednesday, May 23, 2012 in Los Angeles, Calif. (Photo by Jordan Strauss/Invision/AP)

In this May 1, 2012 photo released by iHeartRadio, country singer Carrie Underwood, right, performs at an intimate iHeartRadio Live show presented by P.C. Richard & Son in New York. Underwood's latest album, "Blown Away," was released on Tuesday. (AP Photo/iHeartRadio, Jennifer Pottheiser)

In this May 1, 2012 photo released by iHeartRadio, country singer Carrie Underwood performs at an intimate iHeartRadio Live show presented by P.C. Richard & Son in New York. Underwood's latest album, "Blown Away," was released on Tuesday. (AP Photo/iHeartRadio, Jennifer Pottheiser)

Tony Bennett, left, and Carrie Underwood present the award for best new artist during the 54th annual Grammy Awards on Sunday, Feb. 12, 2012 in Los Angeles. (AP Photo/Matt Sayles)

Singer Carrie Underwood performs at the Stagecoach Music Festival in Coachella, Calif. on Sunday, May 1, 2011. (AP Photo/Dan Steinberg)

Carrie Underwood and Vince Gill perform after the first period of Game 4 between the Nashville Predators and the Anaheim Ducks in a first-round NHL Stanley Cup playoff hockey series on Wednesday, April 20, 2011, in Nashville, Tenn. Underwood is married to Predators center Mike Fisher. (AP Photo/Mark Humphrey)

NASHVILLE, TN - DECEMBER 07: Carrie Underwood performs during The Raging Idiots' Million Dollar Show for St. Jude at Ryman Auditorium on December 7, 2015 in Nashville, Tennessee. (Photo by John Shearer/Getty Images for The Raging Idiots)